Malicious PDF — malware analysis report

Static analysis result for SHA-256 53df1c0036b786df…

MALICIOUS

PDF

55.1 KB Created: 2020-09-01 06:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43a28278b302c3b0359f7b3024a6a4da SHA-1: a908e411e8c797dbed0a8774aac935128433415f SHA-256: 53df1c0036b786df00afed48da4f52093b4311f155d4e9110d088e30fac92a9d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also contains a PDF link farm heuristic, indicating a potential SEO poisoning or traffic generation scheme. No scripts were extracted, and the PDF structure itself does not indicate further malicious activity beyond the embedded link.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=celebrity+hunted+2019+episode+guide
    • https://cdn.shopify.com/s/files/1/0438/9309/6600/files/nefumipotivebeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/libreoffice_calc_macro_activate_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9606/files/57174816680.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f949fd4c32245dea35cfdcd393a6c3a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/77643778694.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/meteo_cardedu.pdf
    • https://static.usrfiles.com/ugd/81d6a4_0daad6da22c0425f8b3749fc4babeece.pdf
    • https://static.usrfiles.com/ugd/b8c837_591654e411f94a9eab90d94087a75b17.pdf
    • https://static.usrfiles.com/ugd/906e9f_f81bd4b9db6447d78f4aef7f7e4ed005.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000831c.bin
cf3da1a61d9cf995ffb9d1f81a751281d9434c316a49148fc9595a41a97d87f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x831C 5640 bytes
font_01_sfnt_off0000963d.bin
8b6a806ec5fb1fea5fdf6a31233f08f296a1d1d941a09cc67b4846b3fad87f9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x963D 13892 bytes
font_02_sfnt_off0000c1bc.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BC 4324 bytes

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